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प्रश्न
A food chain consists of fish, larvae, phytoplanktons and birds. The level of pesticides in water in which the fish, larvae and phytoplanktons live is quite high.
Which organism will have the maximum amount of pesticides accumulated through the food chain? What is this process known as?
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उत्तर
The birds will have the maximum amount of pesticides accumulated in them through the food chain. This process is known as biomagnification.
संबंधित प्रश्न
What is biological magnification?
In the following food chain, 20,000 J of energy was available to the plants. How much energy would be available to man in this chain?
Plants → Sheep → Man
Explain how the pesticides enter a food chain and subsequently get into our body.
Fill in the following blank with suitable word :
In nature, all green plants are............ whereas animals are consumers.
Give an example of a four step food chain operating in grassland. Name the secondary consumer in this food chain
Consider the food chain :
Grass → Deer → Lion
What will happen if all the lions are removed from the above food chain?
Write down a food chain in the sea.
At which trophic level a person is feeding when he is eating bread.
A student went to study a local pond. In one part of the pond she noticed tadpoles scraping at some pond weed. In another part she saw a water beetle holding a tadpole in its jaws.
(a) Construct a food chain for the pond.
(b) How many links are there in this chain?
What will happen if deer is missing in the food chain given below?
Grass → Deer → Tiger
The following is a food chain that ends with human :
How does this food chain differ form a usual food chain involving human such as : plants → goat → human?
'If we excessively use pesticides to protect the crops from diseases, then it may cause long-term damage to mankind'. Justify this statement.
Will the levels of biological magnification be different at different levels of the ecosystem?
With the help of a food chain, explain how biological magnification of harmful chemicals can occur.
What provides the energy which then flows through a food chain?
(a) glucose
(b) oxygen
(c) respiration
(d) sunlight
Green plants utilize ______ percent of sun’s energy to prepare their food by the process of photosynthesis.
Food chains are very important for the survival of most species.
If 10,000 J solar energy falls on green plants in a terrestrial ecosystem, what percentage of solar energy will be converted into food energy?
______ are organisms that are able to produce their own organic food.
In a food chain grasshopper gets energy by eating frog.
In the following food chain, vertical arrows indicate the energy lost to the environment and horizontal arrows indicate energy transferred to the next trophic level. Which one of the three vertical arrows (A, C and E) and which one of the two horizontal arrows (B and D) will represent more energy transfer? Give reason for your answer.
A food chain in a forest ecosystem
